Oh wow, finally I get to see another one. Mine is just a little older and just a little different. Mine says Busan Precision IND LTD, model B200. My stitch length lever and lock are just a little bit different than yours and my crank handle is black plastic instead of wood. My stuck on label is on the inside of the arm. Seeing yours made me take a closer look and mine is dated 2-10-1976. I know that Brother had a factory in Korea in the 80s but don't know exactly how far back it goes. And yes I paid way too much for mine too, how could we not? It does sew a good stitch, my 6yr old GD sewed herself a skirt with mine.
Cari